little doubt thet ea film badge or dosimeter worn on the person will over- estimate the gamma radiation dose delivered at a depth of five eontineters (assumed depth of blood-forming organs). A major factor in determining this difference is the quszlity of radiation undzr consideration. Cne report dealing explicitly with redistion in a fallout field suggests a fectcr of CASATR SRE MICRA 1 Cte yee pee on ete, lg TUN eememeees ne about 3/4. *WT-814. Effective Energy of Residual GammaRadiation, January 1954. CONFIDENTIAL. oe we Te